It has been more than one hundred years since the initial application of rock anchor in the reinforcement of foundation project of UK North Wales outdoor shale in 1872 as well as the adoption of anchor bolting approach under the roadway support project in German in 1912.

The first involvement of hollow anchor bar in China is comes from 1950s,when the wide development of civil economy was just begin.And now the technology of rock bolting has been rapidly improved and applied.What' more,the implementing proportion of rock bolting technique in the construction of some mines are up to 90%,and another are more than 100%,which was therefore can acquire better technological benefits added with economical benefits.

As an efficient anchoring measurement,hollow steel anchor forepoling was one of the most vital role in the civil construction as well as geological engineerings,in which the core is to excavate the surrounding wall of the engineerings with the utilization of rock anchor,moreover,anchoring tech helps well in strengthening underground structure by appling the mutual effectiveness between soils or rock mass to prevent disasters like landslide,sliding,deformation and so on and guarantee the safety of the operation.